Hexahydro-dibenzo[b,d]pyran-9-ones as analgesic drugs

Abstract

Use of 1-hydroxy-3-alkyl-6,6a,7,8,10,10a-hexahydro-9H-dibenzo[b,d]pyran-9-ones as an analgesic drug and pharmaceutical compositions containing same.

I claim: 
     
       1. A process for providing analgesia to mammals suffering from pain which comprises administering to a mammal in need of analgesia an analgetic dose of a compound represented by the formula ##SPC7## wherein R' is either C 7  -C 10  normal alkyl or is the group ##EQU3## wherein R" is C 2  -C 7  alkyl and R v  is H or methyl, wherein both R groups are identical and are H or methyl and wherein R'" is H or C 1  -C 4  alkanoyl, in an amount effective to provide analgesia.   
     
     
       2. A process according to claim 1 in which a dose of from 0.1 to 100 mgs per day of the drug is administered. 
     
     
       3. A process according to claim 1 in which a dose of from 1 to 20 mgs. per day of the drug is administered. 
     
     
       4. A process according to claim 1 in which the drug is administered by the oral route. 
     
     
       5. A process according to claim 1 in which dl-trans-1-hydroxy-3-(1',1'-dimethylheptyl)-6,6a,7,8,10,10a-hexahydro-6,6-dimethyl-9H-dibenzo[b,d]pyran-9-one is administered. 
     
     
       6. A process according to claim 1 in which dl-trans-1-hydroxy-3-(1',2'-dimethylheptyl)-6,6a,7,8,10,10a-hexahydro-6,6-dimethyl-9H-dibenzo[b,d]pyran-9-one is administered. 
     
     
       7. A process according to claim 1 in which dl-trans-1-hydroxy-3-(1'-methylheptyl)-6,6a,7,8,10,10a-hexahydro-6,6-dimethyl-9H-dibenzo[b,d]pyran-9-one is administered.